1.5 million acres in southern Florida, dubbed Everglades National Park in 1947, were inscribed by UNESCO in 1979, and then inscribed to UNESCO’s List of World Heritage Sites in Danger in 2010. The national park protects only the southern 20% of the original Everglades, yet it is the third largest national park in the lower 48 states after Death Valley and Yellowstone. Everglades National Park is also an international treasure as one of only three locations on the globe to appear on the three big lists: World Heritage Site, International Biosphere Reserve, and Wetland of International Importance. The diversity here of wildlife, nine Everglades ecosystems and changing habitats might blow your mind. The national park protects 800 species of land and water vertebrates, over 400 bird species, more than 275 species of fish and over 20 species of snakes. Here is a look at the wild beauty of America’s Everglades. [34 Photos]

American alligators in Everglades National Park as seen from Anhinga Trail. Other popular areas for wildlife viewing — like alligators, wading birds, and other animals — include Shark Valley, the Anhinga Trail at Royal Palm, and Eco Pond in the Flamingo area. Photo #1 by Miguel Vieira

Massive yet gentle, manatees are endangered marine mammals. Sometimes called “sea cows,” they were once thought to be a bit dimwitted, but now are known to have a similar intelligence to dolphins. We fell in love with them while we were in Florida, so here’s look at these endearing, endangered gentle giants. [44 Photos]

According to the U.S. Fish and Wildlife Service (.pdf), “Christopher Columbus was the first European to report seeing a manatee in the New World. To Columbus, and other sailors who had been at sea for a long time, manatees were reminiscent of mermaids—the mythical half-fish, half-woman creatures of the ocean. Manatees are not fish, however, but marine mammals.” When you think about manatees, you probably think of those living in Florida. However, these West Indian manatees traveled to Georgia in late spring and early summer. Photo #1 by Michael Gilbert, Crystal River National Wildlife Refuge Complex / USFWS